Using newly calibrated data taken from NASA's Moon Mineralogy Mapper, which flew aboard India's Chandrayaan-1 spacecraft, scientists have created the first global map of water in the Moon's soil. The water concentration reaches a maximum average of around 500 to 750 parts per million in the higher latitudes. This is a road map to where water exists on the surface of the Moon, study co-author Ralph Milliken, Associate Professor at Brown University, said.